package com.shuai.utils;

import org.springframework.beans.BeansException;
import org.springframework.context.ApplicationContext;
import org.springframework.context.ApplicationContextAware;
import org.springframework.stereotype.Component;

/** Spring 上下文获取工具 */
@Component
public class SpringContextUtils implements ApplicationContextAware {

  private static ApplicationContext applicationContext;

  @Override
  public void setApplicationContext(ApplicationContext applicationContext) throws BeansException {
    this.applicationContext = applicationContext;
  }

  /**
   * 通过名称获取 Bean
   *
   * @param beanName
   * @return
   */
  public static Object getBean(String beanName) {
    return applicationContext.getBean(beanName);
  }

  /**
   * 通过 class 获取 Bean
   *
   * @param beanClass
   * @param <T>
   * @return
   */
  public static <T> T getBean(Class<T> beanClass) {
    return applicationContext.getBean(beanClass);
  }

  /**
   * 通过名称和类型获取 Bean
   *
   * @param beanName
   * @param beanClass
   * @param <T>
   * @return
   */
  public static <T> T getBean(String beanName, Class<T> beanClass) {
    return applicationContext.getBean(beanName, beanClass);
  }

  /**
   * 获取 applicationContext
   *
   * @return
   */
  public static ApplicationContext getApplicationContext() {
    return applicationContext;
  }

  /**
   * 获取当前环境
   *
   * @return
   */
  public static String getActiveProfile() {
    return applicationContext.getEnvironment().getActiveProfiles()[0];
  }
}
